While the 2009 BMW 5 Series is the most technologically advanced entry in the luxo-sport sedan category, the fact that it's the only one to offer a manual transmission more accurately captures the basis of its appeal. As it's quietly grown into a living legend, the continuing success of the performance-oriented 5 Series has helped to invigorate the entire category in which it competes. The softer Mercedes-Benz E-Class and Audi A6 are still sportier than ever, while the latest Infiniti M is the stiffest competition the 5 Series has faced yet – from a performance standpoint, anyway. Anchored by the 528i, 535i and 550i sedans, the lineup also includes the all-wheel-drive 528xi and 535xi sedans plus a 535xi wagon.